I will second the recommendation for studio near field monitors for your application. Studio equipment and home audio equipment are designed with different goals in mind, to be sure, but from what you describe, your situation sounds more akin to a studio environment than it does to the typical home listening environment. I own a pair of Genelec 1029A's, which I use with my PC-based Pro Tools LE studio, and I am very happy with them. The Mackies are also quite good. My thought are that a pair of Mackies or Genelecs (I am somewhat more fond of the Genelecs), combine with a CD player with a volume control, would be great in your situation. This will also save you the price of an integrated amp.
However, if you go the home audio product route, I would just accept that you are not going to have the best imaging or soundstage in that setup, and pick up something that sounds tonally accurate and pleasing to your ears. I might suggest ProAC Tablette Reference 8's as a great sounding, very compact speaker in your price range. I have a pair of these (Signature series) in my office system, and even though they are close to the rear wall and have bookshelves quite close by one of them, their performance is still quite compelling (of course mine are further apart - 6-7').
Good luck, Tom.
However, if you go the home audio product route, I would just accept that you are not going to have the best imaging or soundstage in that setup, and pick up something that sounds tonally accurate and pleasing to your ears. I might suggest ProAC Tablette Reference 8's as a great sounding, very compact speaker in your price range. I have a pair of these (Signature series) in my office system, and even though they are close to the rear wall and have bookshelves quite close by one of them, their performance is still quite compelling (of course mine are further apart - 6-7').
Good luck, Tom.